20626704 has 160 divisors (see below), whose sum is σ = 71424000. Its totient is φ = 5567616.

The previous prime is 20626703. The next prime is 20626709. The reversal of 20626704 is 40762602.

20626704 = T₁₄₆₄ + T₁₄₆₅ + ... + T₁₄₈₂.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20626703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57277 + ... + 57635.

It is an arithmetic number, because the mean of its divisors is an integer number (446400).

Almost surely, 2^20626704 is an apocalyptic number.

20626704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20626704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35712000).

20626704 is an abundant number, since it is smaller than the sum of its proper divisors (50797296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20626704 is a wasteful number, since it uses less digits than its factorization.

20626704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20626704 is about 4541.6631314971. The cubic root of 20626704 is about 274.2478798261.

The spelling of 20626704 in words is "twenty million, six hundred twenty-six thousand, seven hundred four".